"Open servers" are those usenet news servers that allow anyone (and perhaps
you) to use them to post and retrieve usenet posts. Occasionally, lists of
open servers are posted to usenet. Invariably, readers flock to these servers,
flooding them with traffic. This forces the servers to implement security
to restrict access for their own survival.

Consequently, the strategy of posting the URL of a list of servers, rather
than the list itself, evolved. The additional level of effort required to
access the open server reduced the traffic to the open servers, resulting in
a higher probability that they might remain open longer. Many of the lists
are updated weekly or monthly, so bookmarking the list allows retrieval of a
fresh list.
I do not seek out open servers, nor do I maintain such lists. I put all of
my time into developing AllNews. AllNews, WILL check such a list of servers
and report the usefulness of each.

Still, many of these servers restrict access once they have been discovered.
My recommendation is to wait a week after getting a list of servers before
attempting to use them. Thus, the servers on the list will have already
implemented their security, or decided not to.

If the following links do not satisfy your thirst for servers, go to your
favorite search engines and search for something like "open or public
access usenet news servers". Be creative. The following links have all
been posted to various newsgroups, or can be found by doing web searches.
This list will be updated at my convenience. If your list is listed here
and you wish me to remove it, you may
e-mail me.